Belcat 35RG Schematic Request

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I'm looking at this amp https://www.gear4music.com/Guitar-an...Gear4music/7H8 for a friend.
A schematic would be very handy to help work out exactly where the signal is fizzling out, somewhere between the channel select switch and the fx loop return.
Thanks!

[nickb]

You're only hope is to trace it out. I don't think even G4M have the schematic but just a spec that they are made to by yet another Chinese factory. At the prices they pay these are throwaways.

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Yes, I've emailed G4M and Belcat but don't hold out much hope.
The build quality is poor, dry joints on the pcb, very disappointing for such a new amp.
It's a shame, as the amp sounded pretty good.